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Income Taxes (Schedule Of Additional Information Related To Unrecognized Uncertain Tax Positions) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Income Tax Disclosure [Abstract] |  |  |  |
Gross unrecognized tax benefits on uncertain tax positions (reflected in current income tax, other noncurrent liability accounts, or deferred tax assets in the balance sheet) | $ 659 | $ 628 | $ 648 | $ 628
Deferred income tax assets related to unrecognized tax benefits on uncertain tax positions (reflected in deferred income tax accounts in the balance sheet) | 98 | 143 | 48 |
Net unrecognized tax benefits on uncertain tax positions, which would impact the effective tax rate if recognized | 757 | 771 | 696 |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | 169 | 149 | 133 |
Interest and penalties accrued on deductions taken relating to uncertain tax positions (approximately $20, $16 and $26 reflected in income tax expense in the income statement in 2023, 2022 and 2021, respectively, with the balance shown in current income tax and other noncurrent liability accounts in the balance sheet) | 20 | 16 | 26 |
Related deferred income tax assets recognized on interest and penalties | (39) | (34) | (31) |
Interest and penalties accrued on uncertain tax positions net of related deferred income tax benefits, which would impact the effective tax rate if recognized | 130 | 115 | 102 |
Total net unrecognized tax benefits on uncertain tax positions reflected in the balance sheet, which would impact the effective tax rate if recognized | $ 887 | $ 886 | $ 798 |

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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10B -Publisher FASB -URI https://asc.fasb.org//1943274/2147482525/740-10-45-10B + Details
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